Hydrocarbon-burner.



UNITED STATES PATENT OFFICE.

WALTER E. I-IUENEFELD, OF CINCINNATI, OHIO.

HYDROCARBON-BURNER.

To all w/zom it may concern:

Be it known that I, WALTER E. I'IUENE FELD, of Cincinnati, in the countyof Hamilton and State of Ohio, have invented certain new and useful Improvements in Hydrocarbon-Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in hydrocarbon burners and particularly to such as are adapted for use with oil stoves, the object of the present invention being to provide simple and efficient devices which shall be so constructed and arranged, as to afford ready means for effecting the raising and lowering of the combustion chamber member relatively to the wicktube memher; for locking the combustion chamber member in normal'operative position, or sustaining it in elevated position; for guiding the combustion chamber member in its vertical movements relatively to the wicktube member, for cooling the inner cylinder of the wick tube member; for preheating air before it passes through the inner shell of the combustion chamber member, and. for preventing sudden drafts through said combustion chamber member.

Vith these objects in view, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional View of a hydro-carbon burner embodying my improvements; Fig. 2 is a transverse sectional view on the line ww of Fig. 1; Fig. 3 is an enlarged view, in elevation, showing an embodiment of the extension cylinder and elevating devices, and Fig. 4 is an inverted view, in perspective, showing the bottom portion of the extension cylinder.

1 represents the wick-tube member and 2 the combustion chamber member. The wick-tube member comprises concentric tubes or cylinders 3-4 forming a wick chamber between them to receive a wick 5. The outer wick tube is provided at its upper end with an outwardly projecting depressed flange or seat 6 and the inner wick tube is provided at its upper end with an inwardly projecting depressed seat 7.

The combustion chamber member com- Specification of Letters Patent.

Application filed May 15, 1913.

Patented A11 19,1913.

Serial No. "/ezsm.

prises foraminated shells 89 spaced from each other to form a combustion chamber 10 between them which is in line with the wick. The shells 89 are inclosed by a casing 11 which is spaced from the outer shell 8 and secured to said shells in any suitable manner. The upper end of the casing is open and its lower end is provided with an inwardly projecting perforated flange 12. The lower end of the shell 8 is seated (when the parts are in their normal positions) upon the outer depressed flange 6 at the upper end of the outer wick tube 3, and the inner shell 9 is seated upon the inwardly projecting flange 7 at the upper end of the inner wick tube 4.

The inner foraminated shell 9 is notched at its lower end to forman annular series of lugs or fingers 13. This notched lower edge of the inner shell is bent upwardly against the outer face of the shell and the lugs or fingers 13 are bent outwardly to form radial wick limiting devices integral with the shell 9 and disposed transversely in the lower portion of the combustion chamber 10 in the path of the wick. The wick limiting means thus provided do not form part of the invention hereinafter defined by the claims, but constitute the subjectmatter of application for patent filed by me on even date herewith and designated by Serial No. 7 67948.

The combustion chamber member is provided with an extension cylinder 14 which depends into the space within the inner tube of the wick-tube member and cooperates with the inwardly projecting flange 7 at the upper end of the inner wick tube, to guide the combustion chamber member, when the same is moved vertically.

The extension cylinder is enlarged at its upper end as indicated at 15 and enters within the lower portion of the inner foraminated shell 9, in which it is secured. somewhat above the lower edge thereof. A perforated diaphragm 16 is located within the enlargement 15 of the extension cylinder and is provided with a peripheral flange 17 fitting tightly within said enlargement. Somewhat below the enlargement 15, the extension cylinder 14.- is provided with a plurality of holes 18, and a short distance below these holes, an imperforate diaphragm 19 is secured within the extension cylinder.

At its lower end, the extension cylinder is made with an integral bottom portion consisting of a sheet metal spider 20, the contracted portions 21 of the arms of which are integral with an inwardly projecting flange 22 integral with the lower edge of the cylinder. The spider 20 is intended to cooperate with a plurality of cam-arms 23 located within the inner wick tube, and in order to reduce friction between the spider and said cam arms, one edge of each contracted portion 21 of the spider may be beveled, as shown at 24. The base portions of the cam arms are secured together and form a ring 25 and a plurality of radial arms 26, the latter being secured in any suitable manner within the inner wick tube. The cam arms 23 are provided in their lower portions with horizontal slots 27 into which the con tracted portions 21 of the spider 20 enter and thus lock the combustion chamber member in its normal position, with the lower ends of the foraminated shells upon the seats afforded by the flanges 6-7 at the upper ends of the wick tubes. Each cam arm 23 is made with abeveled edge 28, so that when the combustion chamber member and its extension.cylinder 14L are turned in one direction, the cooperation of the arms of the spider 20 with said beveled edges of the cam arms, will cause the combustion chamber to be raised above the wick tube member. At the upper ends of the beveled edges of the cam arms, the latter are made with horizontal edges 29 upon which the spider arms may rest and thus support the combustion chamber member in its elevated position. The cam arms are provided with lugs 30 which serve as stops to prevent disengage ment of the spider from said cam arms when the combustion chamber member is turned to eltect the raising and propping of the same. The lugs 30 may be bent inwardly somewhatto facilitate the ready assembling of the parts of the burner.

When the burner is in operation, air entering the lower end of the wicktube member will be caused to pass upwardly between the extension cylinder 1e and the wall of the inner wick-tube, the air being thus caused to move in close contact with the latter and keep the same cool. The diaphragm 19 serves to prevent a direct draft of air through the combustion chamber member, causing the air to pass between the extension cylinder and inner wick tube as above explained and then through the holes 18 into the upper portion of the extension cylinder and then through perforated diaphragm 16 into the inner foraminated shell of the combustion chamber member. The

space within the upper portion of the extension cylinder, between the diaphragms 1619 forms a chamber in which the air is preheated before it reaches the combustion chamber member.

lVith my improvements, I am enabled to prevent undesirable effects upon the flame, which might otherwise be caused by sudden drafts of cold air.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

1. In a hydrocarbon burner, the combination with a wick tube member and a combustion chamber member, of an extension cylinder having an enlarged upper portion secured within the lower portion of the com bustion chamber member said cylinder entering the wick-tube member, said cylinder provided at its lower end with an integral spider, and a plurality of cam arms secured within the wick-tube member and having horizontal slots, beveled edges and horizontal edges, to cooperate with said spider to cause the combustion chamber to be locked in normal position, to be raised when turned and to be propped in elevated position.

2. In a hydrocarbon burner, the combination with a wick tube member, cam arms secured within the same, and acombustion chamber member normally seated upon the wick-tube member, of an extension cylinder secured to the combustion chamber member and entering the wicktube member and serving to guide the combustion chamber member, said extension cylinder formed at its lower end with an inte ral spider to cooperate with said cam arms when the combustion chamber member is turned.

8. In a hydrocarbon burner, the combination with a wick tube member and a combustion chamber member to seat thereon, of an extension cylinder having an enlarged upper portion secured within the combustion chamber member and entering the wick-tube member, said cylinder having holes below said enlarged upper portion, a diaphragm in said cylinder below said openings, and a perforated diaphragm in the enlarged upper portion of the extension cylinder, said diaphragms forming a preheating chamber in the extension cylinder.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WVALTER E. HUENEFELD.

Witnesses w J. H. lVALLAoE VVURS'LER, BREN J. HERBoRT.

Copies of this patent may be obtained for five cents each, by addressing the Goynmissioner of Patents, Washington, D. C. 

